- Fictional: Godzilla Series
Mothra might not be as notable as other top monsters, but she is certainly worthy of this list. When we first see her, she is a massive sentient larva or imago. Accompanied by two small females to speak on her behalf, we soon find her to be a heroic monster that will do whatever she must to protect her island home or Earth at large. The original design was based on silkworms and obviously giant silk moths. It has some connection to Indian religions here and there too.
Due to originally being part of the Japanese film market, a lot of the old-school monsters were oddly put together. Mothra first appeared in Godzilla films dating back to the early 1960s. In this era, Japan was sometimes sticking with black and white film appearances and obviously, CGI did not yet exist. As a result, Mothra was a mechanically operated puppet that had 6 stuntmen inside of it for operation during scenes.